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12-Rail Power Supply Sequencer and Monitor with ACPI Support

Inventory: 6,370  

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-3-260C-168 HR
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (℃)
VQFN (RGC) | 64 250 | SMALL T&R
-40 to 125
Package | Pins VQFN (RGC) | 64
Package qty | Carrier: 250 | SMALL T&R
Operating temperature range (℃) -40 to 125
View TI packaging information

Features for the UCD90120A

  • Monitor and Sequence 12 Voltage Rails
    • All Rails SampledEvery 400 µs
    • 12-bit ADC With 2.5-V, 0.5% Internal VREF
    • Sequence Based on Time, Rail and Pin Dependencies
    • FourProgrammable Undervoltage and Overvoltage Thresholds perMonitor
  • Nonvolatile Error and Peak-Value Logging per Monitor (up to 12 Fault Detail Entries)
  • Closed-Loop Margining for 10 Rails
    • Margin Output Adjusts Rail Voltage to Match User-Defined MarginThresholds
  • Programmable Watchdog Timer and System Reset
  • Flexible Digital I/O Configuration
  • Pin-Selected Rail States
  • Multiphase PWM Clock Generator
    • Clock Frequencies From 15.259kHz to
      125 MHz
    • Capability to Configure Independent Clock Outputs forSynchronizing Switch-Mode Power Supplies
  • JTAG and I2C/SMBus/PMBus™ Interfaces

All trademarks are the property of their respective owners.

Description for the UCD90120A

The UCD90120A is a 12-rail PMBus/I2C addressable power-supplysequencer and monitor. The device integrates a 12-bit ADC for monitoring up to 12 power-supplyvoltage inputs. Twenty-six GPIO pins can be used for power supply enables, power-on reset signals,external interrupts, cascading, or other system functions. Twelve of these pins offer PWMfunctionality. Using these pins, the UCD90120A offers support for margining, and general-purposePWM functions.

Specific power states can be achieved using the Pin-Selected Rail States feature. Thisfeature allows with the use of up to 3 GPIs to enable and disable any rail. This is useful forimplementing system low-power modes and the Advanced Configuration and Power Interface (ACPI)specification that is used for hardware devices.

The TI Fusion Digital Power™ designer software isprovided for device configuration. This PC-based graphical user interface (GUI) offers an intuitiveinterface for configuring, storing, and monitoring all system operating parameters.


Qty Price (USD)
1-99 8.317
100-249 7.265
250-999 5.601
1,000+ 5.01

Additional package qty | carrier options

Package qty | Carrier 2,000 | LARGE T&R
Inventory 5,580
Qty | Price (USD) 1ku | 4.356 1-99 8.015 100-249 6.534 250-999 5.136 1,000+ 4.356
Custom reel may be available